Stainless Steel Bellows

Overview

Stainless steel bellows offer the best price to performance ratio of any material. Stainless steel bellows maintain their high strength capability and custom design with varying thicknesses. BellowsTech has superior welding practices to ensure that the bellows assembly performs to our customers’ requirements. Within the stainless steel bellows family, BellowsTech offers AM350*, 316L, 347, 321 and 304L SS.

AM350 is a high-strength alloy that produces highly accurate and repeatable results with an operating range from -100°F to 800°F. The metal is slightly magnetic and is used in non-acidic environments.

For cryogenic and non-magnetic applications, BellowsTech prefers 316L stainless steel material. It operates from -420° up to 800°F. 316L material also offers better corrosion resistance for acidic applications.

321, 347 and 304L stainless steels are available through BellowsTech, yet are typically used for legacy, drop in replacement applications.

BellowsTech manufactures its bellows by stamping metal diaphragms, welding inside diameters to form convolutions, and finally welding the outside diameters. This creates a very strong, yet flexible mechanical conduit compatible with liquids and gases. Various diaphragm thickness are available as well as two-ply construction for higher pressures.

BellowsTech can build its assemblies using stainless steel from ultra-high vacuum (UHV) to positive pressures. Whether our customer requires an actuator, volume compensator, expansion joint, or flexible seal, BellowsTech can design and manufacture to customer specifications.

With custom capabilities of size, shape, and connections, the flexibility of BellowsTech stainless steel bellows is endless. BellowsTech can also offer designs configured from our standard sizes as well. Over eighty standard diaphragm sizes makes finding the right fit is easy, timely, and cost-effective. Add any type of machined flange or end piece connection to the bellows assembly in order to make installation simple.

Specifications - Stainless Steel Bellows - PDF
Material	AM350, 316L, 347, 321 or 304L SS
Thickness	0.002″ and up every 0.001″
Standard Leak Rate	<1×10^-9 std CC He/sec
Size Ranges
Outside Diameter	0.358″ (9.0932mm) to 22.205″ (564mm)**
Inside Diameter	0.198″ (5.029mm) to 19.921″ (505.99mm)**
Shapes	Round standard. Non-Round Available; Contact Factory.
Length	Up to 96 inches (244 cm)
AM 350^® is a registered trademark of Allegheny Technologies*For other dimensional requirements, contact the factory

Edge Welded Metal Bellows Diaphragm Specifications

Use the following table as a guide for configuring your metal bellows. BellowsTech currently offers over 80 standard sizes. The list can be sorted by each column, searched through the search box at the top-right and expanded by increasing the number of visible entries. For custom sizes, contact us and our design engineers will work with you to find the best solution.

Diaphragm # Outside
Diameter
(OD) Inside
Diameter
(ID) Mean effective
pressure area
MEA (inches^2) Radial Span
(inches)

0036A 0.358 0.200 0.0611 0.079

0040A 0.396 0.2 0.0697 0.098

0048A 0.477 0.198 0.0895 0.1395

0050A 0.496 0.2 0.0951 0.148

0060A 0.595 0.26 0.1435 0.1675

0067A 0.67 0.394 0.2223 0.138

0075A 0.75 0.26 0.2003 0.245

0082A 0.821 0.548 0.3680 0.1365

0083A 0.827 0.575 0.3859 0.126

0084A 0.838 0.5 0.3515 0.169

0089A 0.892 0.592 0.4324 0.15

0102A 1.022 0.683 0.5708 0.1695

0103A 1.03 0.54 0.4840 0.245

0103B 1.03 0.54 0.4840 0.245

0103C 1.03 0.54 0.4840 0.245

0103D 1.03 0.55 0.4902 0.24

0108A 1.08 0.86 0.7390 0.11

0117A 1.17 0.75 0.7238 0.21

0118A 1.181 0.886 0.8389 0.1475

0124A 1.24 0.66 0.7088 0.29

0133A 1.33 1.015 1.0797 0.1575

0136A 1.355 0.54 0.7051 0.4075

0136B 1.362 1.012 1.1066 0.175

0144A 1.437 0.937 1.1066 0.25

0150A 1.5 1 1.2272 0.25

0151A 1.511 1.186 1.4282 0.1625

0156A 1.56 0.865 1.1547 0.3475

0163A 1.625 0.75 1.1075 0.4375

0163B 1.625 0.937 1.2888 0.344

0165A 1.65 1.24 1.6399 0.205

0174A 1.738 1.363 1.8881 0.1875

0175A 1.75 0.75 1.2272 0.5

0175B 1.75 1 1.4849 0.375

0176A 1.759 1.305 1.8433 0.227

0188A 1.875 0.975 1.5948 0.45

0189A 1.89 1.39 2.1124 0.25

0190A 1.9 1.5 2.2698 0.2

0193A 1.925 1.2 1.9175 0.3625

0195A 1.950 1.557 2.4149 0.1965

0200A 2 1.25 2.0739 0.375

0219A 2.190 1.690 2.9559 0.250

0224A 2.244 1.625 2.9392 0.3095

0225A 2.25 1.5 2.7612 0.375

0244B 2.437 1.937 3.7565 0.25

0245A 2.45 1.65 3.3006 0.4

0260A 2.6 1.78 3.7668 0.41

0260B 2.595 2.185 4.4863 0.205

0263A 2.625 2.125 4.4301 0.25

0265A 2.65 2 4.2456 0.325

0270A 2.7 1.95 4.2456 0.375

0275A 2.75 2.125 4.6664 0.3125

0275B 2.75 2.125 4.6664 0.3125

0275C 2.75 1.65 3.8013 0.55

0276A 2.76 1.965 4.3836 0.3975

0300A 3 2 4.9087 0.5

0300B 3 2 4.9087 0.5

0317B 3.165 2.585 6.4918 0.29

0331A 3.305 2.81 7.3421 0.2475

0331C 3.305 2.81 7.3421 0.2475

0350A 3.5 2.75 7.6699 0.375

0368A 3.675 2.53 7.5599 0.5725

0403A 4.034 3.085 9.9510 0.4745

0403B 4.034 3.085 9.9510 0.4745

0417A 4.17 3.7 12.1613 0.235

0420A 4.2 3.4 11.3411 0.4

0472A 4.72 3.72 13.9867 0.5

0475A 4.75 3.03 11.8847 0.86

0490A 4.9 3.53 13.9536 0.685

0490B 4.903 4.323 16.7131 0.29

0497A 4.97 4 15.7985 0.485

0508A 5.077 4.13 16.6443 0.4735

0545A 5.45 4.95 21.2372 0.25

0572A 5.722 4.472 20.4042 0.625

0588A 5.88 5.12 23.7583 0.38

0675A 6.75 5.542 29.6671 0.604

0728A 7.283 5.906 34.1549 0.6885

0775A 7.75 6.85 41.8539 0.45

0785A 7.85 6.25 39.0363 0.8

0787A 7.874 6.693 41.6649 0.5905

0808A 8.083 7.15 45.5618 0.4665

0925A 9.25 8 58.4263 0.625

0950A 9.5 8.5 63.6173 0.5

1099A 10.99 10.12 87.4997 0.435

1100A 11 9.5 82.5159 0.75

1110A 11.102 9.102 80.1502 1

1200A 12 10 95.0332 1

2221A 22.205 19.921 348.4419 1.142

Typical Industries	Benefits
Industrial & Semiconductor	Price to Performance
Medical & Test Equipment	Thickness and Multi-Ply Capability
Oil / Gas / Chemical Processing	Complete Compression and 25% Extension








Name

     
Company Name

     
Email Address

     
Phone Number

    
Description of Bellows Requirement

Find Bellows by Type

Actuators
Bellows Accumulators
Bellows Mechanical Seals
Metal Expansion Joints
Volume Compensator Bellows
Lifter Bellows
Diesel Exhaust Bellows
Vibration Dampener
Mechanical Feedthroughs

Find Bellows by Material

Titanium Bellows
Inconel Bellows
Hastelloy Bellows
Stainless Steel Bellows

Home	Edge Welded Bellows	Metal Bellows Products	Applications	Custom Bellows	Company Profile	Contact Us
	bellowstech.de @PMGBellows	Standard Diaphragm Sizes Welded Bellows Design Form	Aerospace Bellows Cryogenic Bellows Medical Bellows Oil & Gas Bellows UHV Semiconductor Bellows Test Stand Bellows		News/Events Privacy Policy Suppliers	BellowsTech, LLC 1289 N. US Highway 1, Suite 1 Ormond Beach, FL 32174 USA Phone: (386) 615-7530 A Servometer Company ©

Overview

Specifications - Stainless Steel Bellows - PDF

Edge Welded Metal Bellows Diaphragm Specifications

Typical Industries

Benefits

Find Bellows by Type

Find Bellows by Material

Home

Edge Welded Bellows

Metal Bellows Products

Applications

Custom Bellows

Company Profile

Contact Us